Disorder and the effective Mn-Mn exchange interaction in Ga${}_{1-x}$Mn${}_x$As diluted magnetic semiconductors

Antonio J. R. da Silva, A. Fazzio, Raimundo R. dos Santos +1

We perform a theoretical study, using {\it ab initio} total energy density-functional calculations, of the effects of disorder on the $Mn-Mn$ exchange interactions for $Ga_{1-x}Mn_…